Valve.



J. L. DENNIS & J. HUNTINGTON.

VALVE.

APPLICATION FILED MAY 8, 1011.

Patented Oct. 3, 1911.

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o 1 fl 9 i V lNVENTOR-S and 1175700 l7. Dennil's 05.519770 BY I AWTORNEY UNITED STATES I, PA ENT OFFICE.

JOHN L. DENNIS AND J OBEPI-I HUNTINGTON, 0F PHILADELPHIA PENNSYLVANIA.

To all whom it may concern:

Be it known that we, JOHN L. DENNIS VALVE.

Specification of Letters Patent. .Application filed May 3, 1911. SerialNo. 025,544

and Josnrn IIUNTI'NGTON,"Citizens of the,

llnitedstatea, residing at the city and county of Philadelphia and Stateof lenusylvania, haveinvented certain new and u.efnl Improvements inValves, of 'lllrh the following is specification,

The object of our invent-i0nis(to provide a valve of novel, simple andetlieient eonstruotion in which a plug provided with arrow threads isemployed in'a ("win provided with 'nn inlet opening and an outletopening, and inj which the screw threads are so related to said openingsthat the plug, may be 0 )eratedto open and'elose' the valve and to 0bet. a tight. joint closing the inlet openin l'Vith' this object. inview, the invention consistsin the novel construction and romhinationsof parts which will he hereimrfter fully described and claimed.

In the drawings: 'l igme -l is a. vertical section of our improved valvein the closed position and showing the Plug in elevation. Fig. 2- is asimilar view 0. open position, showing the plug: in section. and theoperating handle broken away. Fig. 3 is a horizontal seotion, on line3-3 of Pig; 1. ltig..4 is a vertical seetiou, showing a modified forthof the invention;

Referring to Figs. 1, 2 and 3, 2 desiguateia a cylindrical. easinghaving a lateral inlet. opening! and a. lateral nut-let opening 5therein, an'shown'. The lower end of the (was-h1g2 is closed by a bottomwall (3, and the upper end of the casing is elosed by a rap 7 screwed onto the (a -ting.

l ittedYtn the interior 0 lthe easing: 2 is a \'li|ulri('.al dug 8\vliieh is provided with two fit'lV-d'rllllttlllh 9 and Ill. threads; 5)and 10 a re tilted to corresponding s irtfhidlnpads formed in the casing2, where.-

the valve in the.

the body of the plug 8,

hv'wheu the )lIIg S is turned; it mar he nmt'tlndisdain-e between theserew-lhreallw Hand. Ill is'g'reater'tlmullie d ameter of the PatentedOct. 3, 1911.

inlet opening 4 so that one screw-thread will plug 8 from otherscrew-thread extends around the other side/of the plug], 8 from aposition above the inlet opening to a position below the same,

thusnot only closing the inlet opening by when it is In the position,shown in Fig. 1, but also elosin the inlet 0 iening by the engagement 0tthe fitl'tl\\'-illltlilll$ 9 and 10 with the screw threada formed in thecasing 2. The plug 8 is provided with a transverse op'eniug'or passageway 13, which, when the plug 8 i5 raised to the position shown in'Figf2,is adapted -to register with the openings 4 and 5 to affordcomiminieat-ion between the same when the valve is open. The cap 7forins a stop limitin the upward movement of the plug 8, and t todownward movement; o-lthe plug 8 is limited by the upper or innerportion of the bottom wall (l of the casing.

When the valve is closed the plug 8 is screwed hard against the screw 14thereby forcing the upper faces of both screwthreads .9 and 10 intoclose engagement with the opposing faces of the screw-threads formed inthe casing 2. This, with the arrangement of the'screw-threads 9 and 10with'relntion to the inlet opel'ling 4, as pre-' viously explainezhformsameans 'of efammny closing the inlet opening. In order to balance theplug 8 against a'n pressure llnid that; may enter the top or the bottomof the casing 2, we .provide the plug 8 with vertical openings 15,opening 13.

In the inoditieation, shown in Fig. 4, the easing 2 is provided with anoutlet opening H1, in lieu of the outletopening 5, shown in l 'igs. l.2.:md'3. The outlet opening 16 ex tends from the bottom of the casing 2and at right angles to the inlet opening 4.- The plug S in themmlilieation,shown in Fig. 4, is provided with aright angle passagewayI? whieh is ada. )tfll to register with the.inlet opening 4- w lll'l theplug 8-.is raised, to a ll'ord eonuuunirat-ion mbetween the inletopening 4 and the mrtletopening 16. hen the plug S'is lowered. it andthe scfrew; threads thereon rlohe the inlet opening, 4, as previrl'uslvdeserihed. \Vhen the plug 8, of the llltfllllltiIi-lnll. is lowered toeloee the valve, the hub ml the hand wheel 12 mlaterally of the' .end ofthe screw 14 serewed into the central gages the cap 7 and limits thedownward mgtherein afl'ording communication lie-t tween said inlet.opening and said outlet opening. when the 0 ning in the plug is inregistry with said inlet opening, said easing bein provided with meansfor limiting thelon mtudinal movement of said plug, two

paralle screw-threads surrounding the plug and engaged with correspondinscrew threads .in the casing on each'side 6 said inlet opening, thedistance between said screw threads being greater than the diameter 0said inlet opening, and means operative to turn said plug 2. Ina-valve,the combination ofa cylindrical casing having closed ends and a lat eraloutlet opening and a latcral inlet.opening therein, a. cylindrical plugwithin the casing and having an'o ening therein affording communicationhetween said inlet opening and said outlet opening'when the opening inthe plu is in reqiitry with said ing on each side of saidinlet'openinfiithe i distance between said screw-threads greater thanthe diameter of said inlet openmg said plug halvingn -Kassie ewaytherein communicating with bot en 5:01 the casing, and means 0 erativeto turn said plug.

In testimony W ereof we affix our slgnatures in the presenee of twowitnesses; JOHN L. DENNIS. I JOSEPH HUNTINGTON. Witnesses:

S. I. HARPER, A; V. Gnomn.

